prep 179 帮忙解释一下

179. In a blow to those who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added as the message is forwarded to others or sent back and forth.

A. who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added

B. who had still been harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person was privy to any comments that a recipient might have added.

C. who still were harboring the illusion that E-mail exchanges are private, a warchdog group recently uncovered a trick enabling an interloper to rig an E-mail message so that this person is privy to any comments that a recipient would add.

D. still harboring the illusion that E-mail exchange are private , a watchdog group recently uncovered a trick that enables an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient might add

E. still harboring the illusion that E-mail exchanges had been private, a wathchdog group recently uncovered a trick that will enable an interloper to rig and E-mail message so that this person was privy to any comments that a recipient might add.

A:

B:

C:

D: Correct

E:

我选了C

In a blow to those who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added as the message is forwarded to others or sent back and forth.

(A) who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added

(B) who had still been harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person was privy to any comments that a recipient might have added

(C) who still were harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick enabling an interloper to rig an E-mail message so that this person is privy to any comments that a recipient would add

(D) still harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick that enables an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient might add

(E) still harboring the illusion that E-mail exchanges had been private, a watchdog group recently uncovered a trick that will enable an interloper to rig an E-mail message so that this person was privy to any comments that a recipient might add

红色的部分都是我认为有问题的地方。

GG的意思是不是他们的时态不对,只有D稍好.偶这木瓜脑袋不开壳啊

179. In a blow to those who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added as the message is forwarded to others or sent back and forth.

A. who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added 应该说those who是个不错的结构，但是这里的tense有问题，haebored 和are 有冲突，trick for enabling不清楚，最后的had added和分句中的will差的太远

B. who had still been harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person was privy to any comments that a recipient might have added. those who是个不错的结构，但是这里的tense有问题， had been harboring  和are 有冲突，trick for enabling不清楚，最后的have added和分句中的was有距离

C. who still were harboring the illusion that E-mail exchanges are private, a warchdog group recently uncovered a trick enabling an interloper to rig an E-mail message so that this person is privy to any comments that a recipient would add. those who是个不错的结构，但是这里的tense有问题，were harboring 和are 有冲突，trick enabling不太好，但是分词修饰的也不错，但是和之后的so that 联系不起来，因为如果enabling作为分词修饰了trick，那么句子就是这样的“uncover trick... so that...”逻辑意思连不上，

D. still harboring the illusion that E-mail exchange are private , a watchdog group recently uncovered a trick that enables an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient might add 这里有一点好，虽然没有who但是避免了事态的冲突，我发现在perp和GWD中，越来越倾向于使用从句来修饰一个词达到清楚的效果，这里的trick that就似乎一例。

E. still harboring the illusion that E-mail exchanges had been private, a wathchdog group recently uncovered a trick that will enable an interloper to rig and E-mail message so that this person was privy to any comments that a recipient might add.这里的had been private有两点错误1.事态没有根据，2.似乎在说这样的幻觉已经不存在了；这里的will 也有一定问题，一般现在时比较合适，最后的was和之前的will有冲突

感谢gonghao！

看来时态冲突就可以排除选项，不用搞明白句子意思，

不大理解句子意思，正犯愁了。

想了一个晚上了
            仍想不透为什么

或许是我哪里想错了
            结构看错了
                 还是理解错了gonghao的意思

麻烦指点一下